CN101879340B - Automatic vent type transfusion set - Google Patents
Automatic vent type transfusion set Download PDFInfo
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- CN101879340B CN101879340B CN2010102260414A CN201010226041A CN101879340B CN 101879340 B CN101879340 B CN 101879340B CN 2010102260414 A CN2010102260414 A CN 2010102260414A CN 201010226041 A CN201010226041 A CN 201010226041A CN 101879340 B CN101879340 B CN 101879340B
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- reducer
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Abstract
The invention discloses an automatic vent type transfusion set. The automatic vent type transfusion set comprises an upper transfusion pipe, a drop funnel, a lower transfusion pipe, and a regulating switch; a liquid inlet and a liquid outlet of the drop funnel are respectively communicated with a lower end of the upper transfusion pipe and an upper end of the lower transfusion pipe; the regulating switch is arranged on the lower transfusion pipe; a contact pin is connected with an upper end of the upper transfusion pipe; a transfusion needle is connected with a lower end of the lower transfusion pipe; the automatic vent type transfusion set of the invention also comprises a reducer; the reducer is arranged between the liquid outlet of the drop funnel and the lower transfusion pipe; and during transfusion, bubbles entering the reducer are extruded and broken into smaller bubbles at the position of the smallest inner diameter of the reducer, and the smaller bubbles overcome the self-gravitation action to float upwards so as to be discharged, so that the aim of automatically venting gas is fulfilled. The automatic vent type transfusion set has the advantages of simple structure, convenient processing, and capability of achieving effects of venting the gas in real time and smoothly transfusing liquid medicine.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, specifically a kind of automatic vent type transfusion set.
Background technology
Transfusion device is mainly used in to the patient and carries medicinal liquid or blood, and its structure mainly comprises contact pin, upper tubing, dropping funnel, following tube for transfusion, by-pass cock and entry needle; Wherein in the junction of upper tubing and dropping funnel, the aperture of the dropping funnel and the junction of following tube for transfusion is consistent with the aperture of tube for transfusion all, like this when the transfusion device that adopts said structure is infused to the patient, after opening by-pass cock, along with entering in transfusion device inside of liquid may produce bubble, the bubble that produces can flow along with flowing of liquid, when the above-mentioned junction of bubble process, because its caliber is without any variation, this place enters down in the tube for transfusion so bubble can be flowed through smoothly, so when bubble flow to the entry needle place, just do not enter human body by the entry needle pin hole possibly like this because process is broken, thereby the formation aeroembolism, the life security that can threaten the people when serious.
In order to solve the problems of the technologies described above, in the prior art, Chinese patent literature CN201061645Y (international publication number is W2010/048778A1) discloses a kind of automatic vent bubble-proof transfusion device, it comprises dropping funnel, goes up infusion tube and following infusion tube, the inlet of dropping funnel is communicated with goes up infusion tube, cover is equipped with down connection tube on the liquid outlet of dropping funnel, following connection tube lower end links to each other with following infusion tube, the upper end of following connection tube extends upward and form exhaustor in dropping funnel, be provided with axially extending bore in the described exhaustor, axially extending bore is conducted with following infusion tube; In addition, axially be provided with the drain slit on the perisporium of exhaustor, the same and axially extending bore in drain slit is conducted.When above-mentioned transfusion device uses, after liquid enters dropping funnel, the pressure that produces in dropping funnel along with liquid and the increase gradually of dropping funnel inner air pressure sum have overcome the surface tension effects of liquid in the drain slit, make liquid break through the slit and enter axially extending bore and carry out drain.Overcome in the capillary process at above-mentioned pressure, float, thereby the liquid that enters axially extending bore no longer has bubble, prevented the generation of bubble to a certain extent owing to be created in the bubble of dropping funnel bottom during dropping liquid.But, also there is following several problem in above-mentioned tube for transfusion of the prior art: the first, described exhaustor is arranged on described dropping funnel inside, also be provided with the drain slit at the exhaustor perisporium, complex structure, and difficulty of processing is big, it is also very high to the requirement of mold to add man-hour, thereby has improved manufacturing cost on the whole; Second, in the prior art for the function setting that realizes anti-bubble described drain slit, but realize the purpose of anti-bubble, be that the liquid that need guarantee to enter in the dropper behind the by-pass cock of opening transfusion device did not have the exhaustor certain height, when guaranteeing that pressure that liquid produces is enough to overcome the surface tension effects of liquid in the drain slit in dropping funnel, liquid just can be broken through the slit and enter axially extending bore and carry out drain, this just needs user to wait certain hour just can really realize continuous dropping liquid, make this transfusion device use and inconvenience, and transfusion efficient is also lower.
Summary of the invention
First technical problem to be solved by this invention is the transfusion device complex structure that is used for anti-bubble in the prior art, and difficulty of processing is big, so provide a kind of simple in structure, be convenient to process but can play the automatic vent type transfusion set of anti-bubble effect equally.
Second technical problem to be solved by this invention is to be used for the liquid that the transfusion device of anti-bubble need guarantee to enter in the dropper in the prior art there be not the exhaustor certain height behind the by-pass cock of opening transfusion device, and guarantee just can really to realize continuous transfusion when pressure that liquid produces is enough to overcome the surface tension effects of liquid in the drain slit in dropping funnel, thereby prolonged transfusion time on the whole, reduce transfusion efficient, and then provide a kind of need not to wait, after opening the transfusion device by-pass cock, promptly can realize the automatic vent type transfusion set of transfusion continuously soon.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize:
A kind of automatic vent type transfusion set, comprise upper tubing, dropping funnel, following tube for transfusion, by-pass cock, the inlet of described dropping funnel is communicated with described upper tubing lower end and described tube for transfusion down upper end respectively with liquid outlet, and described by-pass cock is arranged on the described tube for transfusion down;
Upper end at described upper tubing also is connected with contact pin, also is connected with transfusion needle in the described lower end of tube for transfusion down; Described fluid and blood transfusion apparatus comprises that also at least one connection is arranged on described dropping funnel and described reducer between the tube for transfusion down, and the minimum diameter of described reducer is 0.01cm～0.20cm.
The minimum diameter of described reducer is 0.1cm～0.15cm.
Described reducer is conical reducer pipe.
The other end relative with an end of described reducer internal diameter maximum is an end of internal diameter minimum.
Described dropping funnel is pegged graft by last dropping funnel and following dropping funnel and is formed.
Described dropping funnel down and the described splicing position of going up dropping funnel are double-decker, form the scrobicular ring that matches and peg graft with described upward dropping funnel between described double-deck internal layer and the skin.
Be provided with a relief valve in the dropping funnel under described.
Described relief valve comprises ebonite accessory and flexible glue base, described ebonite accessory comprises floating cup and the floating head that is connected with described floating cup, described floating cup formation has opening floating cup cavity up, described floating head is arranged at the top of described opening, be provided with between described floating cup and described floating head and can make liquid enter clearance channel in the floating cup cavity, described floating head size is more than or equal to described floating glass of cavity tip size;
Described flexible glue base is arranged at described floating cup bottom;
Described floating cup was realized with being connected by the fixed support that is arranged between described floating cup cavity inside and the described floating head bottom of described floating head;
Described fixed support comprises that the center that is arranged on described floating cup cavity inside is provided with the cylinder of through hole, and is arranged in the floating head projection of described floating head towards described floating cup one side, and described floating head projection matches with described through hole and is connected;
Described cylinder runs through the bottom of described floating cup, is arranged at the described through hole at described cylinder center and matches with flexible glue base projection on being arranged at described flexible glue base and be connected.
Described reducer is flexible plastic tube.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) automatic vent type transfusion set of the present invention, on the fluid and blood transfusion apparatus of prior art, be provided with reducer, and described reducer connected be arranged on described dropping funnel and described down between the tube for transfusion, one end of described reducer internal diameter maximum is communicated with described dropping funnel liquid outlet, the described reducer other end is communicated with described tube for transfusion down, and described reducer minimum diameter is 0.01cm～0.20cm.During use, after opening by-pass cock, liquid enters in the dropping funnel, if there is bubble to produce, then the bubble of Chan Shenging can be introduced into the big end of internal diameter of reducer along with liquid by the dropping funnel liquid outlet, along with constantly reducing of internal diameter, air pocket is pressurized gradually, minimum diameter place at reducer, thereby air pocket has been subjected to a lot of minute bubbles of the broken formation of very big squeezing action, so the bubble that diminishes can float against the dropping liquid direction owing to own wt is very little, thereby makes the liquid that can not by entering human body behind the reducer minimum diameter place contain bubble again, reaches self-bleeding purpose.
The structure of setting up reducer between this infra tube for transfusion and the dropping funnel, can just can be in transfusion beginning along with the drippage realization automatic vent of liquid, need not to wait for, reach purpose instant, that infuse continuously, effectively avoided before transfusion, needing to wait the liquid that enters dropping funnel not have the axially drain slit part of setting of exhaustor in the prior art, the surface tension that the interior atmospheric pressure sum of liquid pressure and dropping funnel overcomes the drain slit just can realize the deficiency of transfusion continuously afterwards, reduce transfusion time, improved transfusion efficient; And the structure of exhaustor that is provided with the drain slit compared to existing technology in dropping funnel inside is simpler, mold easily not only, and also easy to process, with low cost.
(2) automatic vent type transfusion set of the present invention, the minimum diameter that described reducer preferably is set is 0.1cm～0.15cm, the reducer of this kind internal diameter is convenient to make, and after can realizing the air pocket fragmentation effectively, the size of minute bubbles is suitable for its floating upward quickly and goes out liquid level, simultaneously for the smoothness of transfusion without any influence.
Description of drawings
For the easier quilt of content of the present invention is clearly understood, below according to a particular embodiment of the invention and in conjunction with the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of automatic vent type transfusion set of the present invention;
Fig. 2 is the structural representation with automatic vent type transfusion set of relief valve of the present invention;
Fig. 2 (1) is the enlarged diagram of the splicing position of the dropping funnel of automatic vent type transfusion set shown in Fig. 2;
Fig. 3 is a reducer main shaft cutaway view of the present invention;
Fig. 4 (1) and Fig. 4 (2) are the structural representations of reducer of the present invention;
Fig. 5 is a relief valve main shaft cutaway view of the present invention.
Reference numeral is expressed as among the figure: 1-reducer, 2-dropping funnel, 3-relief valve, the 4-upper tubing, tube for transfusion under the 5-, 6-contact pin, the 7-by-pass cock, 8-entry needle, 21-splicing position, 211-splicing position scrobicular ring, the last dropping funnel of 212-, dropping funnel under the 213-, 31-flexible glue base, 32-floating head, the floating cup of 33-, the floating cup of 34-cavity, 35-fixed support, 36-floating head projection.
The specific embodiment
Embodiment 1
Automatic vent type transfusion set of the present invention, comprise contact pin 6, upper tubing 4, dropping funnel 2, reducer 1, following tube for transfusion 5, by-pass cock 7, entry needle 8, as can see from Figure 1, described dropping funnel 2 selects to be set to the integrate shaped type structure, described upper tubing 4 one ends connect described contact pin 6, the inlet of described dropping funnel 2 is communicated with described upper tubing 4 lower ends, described reducer 1 is conical reducer pipe, the liquid outlet of described dropping funnel 2 is communicated with an end of reducer 1 internal diameter maximum, one end of the internal diameter minimum relative with an end of described reducer 1 internal diameter maximum directly is connected with described tube for transfusion 5 down, the described other end of tube for transfusion 5 down is connected with described entry needle 8, and by-pass cock 7 is arranged on down on the tube for transfusion 5.
In the present embodiment, described reducer 1 minimum diameter is set to 0.10cm.
Above-mentioned automatic vent type transfusion set in use, at first open by-pass cock 7, liquid progresses into dropping funnel 2 along upper tubing 4, enter in the described tube for transfusion 5 down via dropping funnel 2 again, at this moment because itself there is certain air in fluid and blood transfusion apparatus inside, so produce at the fashionable bubble that in fluid and blood transfusion apparatus, has of fluid drips, can not impact for less bubble the safety of infusing, because it can float to dropping funnel 2 liquid levels owing to gravity is less, and will be moved down into entry needle 8 places gradually along with liquid for bigger bubble, when the diameter of this bubble just can be by entry needle 8 diameters, bubble entered human body and impacts for people's life security so.The present invention is provided with described reducer 1, bigger bubble can be introduced in the described reducer 1 before the tube for transfusion 5 under entering via the outflow of dropping funnel 2 liquid outlets, what be introduced into is the big end of reducer 1 internal diameter, flow to the little end of internal diameter gradually then, along with constantly reducing of internal diameter, air pocket is pressurized gradually, minimum diameter place at reducer 1, thereby air pocket has been subjected to a lot of minute bubbles of the broken formation of very big squeezing action, so the bubble that diminishes can float to dropping funnel 2 liquid levels owing to own wt is very little, thereby make liquid that can not contain bubble again, ensured the transfusion safety by entering human body behind the reducer 1 minimum diameter place.Said process is the process of a moment, and it can not have influence on transfusion in larger-diameter bubble being carried out broken process carrying out can guarantee the smoothness of infusing simultaneously.
Embodiment 2
Automatic vent type transfusion set described in this embodiment also is provided with relief valve 3 in the following dropping funnel 213 of described dropping funnel 2, described relief valve 3 can be set to the relief valve 3 of any structure of the prior art.Described in the present embodiment relief valve 3 comprises ebonite accessory and flexible glue base 31; See shown in Figure 5, described ebonite accessory comprise floating cup 33 with described floating cup 33 floating heads that are connected 32, described floating cup 33 forms opening floating cup cavity 34 up, described floating head 32 is arranged at the top of described opening, be provided with between described floating cup 33 and described floating head 32 and can make liquid enter clearance channel in the floating cup cavity 34, described floating head 32 sizes are more than or equal to described floating glass of cavity 34 tip size; Described flexible glue base 31 is arranged at described floating cup 33 bottoms; Described floating cup 33 was realized with being connected by the fixed support 35 that is arranged between described floating cup cavity 34 inside and described floating head 32 bottoms of described floating head 32; Described fixed support 35 comprises that the center that is arranged on described floating cup cavity 34 inside is provided with the cylinder of through hole, and is arranged in floating head 32 projections of described floating head 32 towards described floating cup 33 1 sides, and described floating head 32 projections match with described through hole and are connected; Described cylinder runs through the bottom of described floating cup 33, is arranged at the described through hole at described cylinder center and matches with flexible glue base 31 projections on being arranged at described flexible glue base 31 and be connected.
In addition, the dropping funnel 2 described in the present embodiment also can be set to the structure of integrate shaped type as described in example 1 above, and one promptly just sets within it relief valve 3 when described dropping funnel 2 moldings formed therefroms.As embodiment that can conversion, installation and taking-up for the ease of relief valve 3, the dropping funnel 2 of the automatic vent type transfusion set shown in Fig. 2 is set to be formed by last dropping funnel 212 and 213 grafting of following dropping funnel, its assembled state sketch map is referring to Fig. 2 (1), described dropping funnel down and the described splicing position 21 of going up dropping funnel are double-decker, form the scrobicular ring that matches and peg graft with described upward dropping funnel 212 between described double-deck internal layer and the skin, by the inner tight grafting that realizes described upper and lower dropping funnel of double-deck scrobicular ring that described upward dropping funnel 212 is plugged on down dropping funnel 213.
The minimum diameter of described in this embodiment reducer 1 is set to 0.15cm, being provided with of described reducer 1 can be selected to be set to all end internal diameters that is connected with described dropping funnel 2 liquid outlets as described in example 1 above and (adapt with described dropping funnel 2 liquid outlets greatly, can realize the two grafting or connection), be connected the little structure of an end internal diameter (seeing shown in Fig. 4 (1)) with described down tube for transfusion 5, also can select to be set to Fig. 4
(2) structure in, the little structure of all big, the described reducer 1 middle part internal diameter of internal diameter of a section of promptly being connected with described dropping funnel 2 liquid outlets and the end that is connected with described down tube for transfusion 5 can realize purpose of the present invention too.
During use, at first open by-pass cock 7, liquid progresses into dropping funnel 2 along upper tubing 4, along with increasing of liquid in the dropping funnel 2, liquid overcomes the action of gravity of relief valve 3 to the buoyancy of relief valve 3, along with described relief valve 3 come-ups of the dropping of liquid, flexible glue base 31 breaks away from described dropping funnel 2 liquid outlets, liquid enters in the described tube for transfusion 5 down via dropping funnel 2 liquid outlets, at this moment because itself there is certain air in fluid and blood transfusion apparatus inside, so produce at the fashionable bubble that in fluid and blood transfusion apparatus, has of fluid drips, bigger bubble is introduced in the described reducer 1 before the tube for transfusion 5 under entering via the outflow of dropping funnel 2 liquid outlets, what be introduced into is the big end of reducer 1 internal diameter, flow to the little end of internal diameter gradually then, along with constantly reducing of internal diameter, air pocket is pressurized gradually, minimum diameter place at reducer 1, thereby air pocket has been subjected to a lot of minute bubbles of the broken formation of very big squeezing action, so the bubble that diminishes can float to dropping funnel 2 liquid levels owing to own wt is very little, thereby make liquid that can not contain bubble again, ensured the transfusion safety by entering human body behind the reducer 1 minimum diameter place.Said process is the process of a moment, and it can not have influence on transfusion in larger-diameter bubble being carried out broken process carrying out can guarantee the smoothness of infusing simultaneously.After transfusion finished, the action of gravity that utilizes relief valve 3 itself was greater than its suffered buoyancy function, and relief valve 3 descends, flexible glue base 31 sealing dropping funnels 2 liquid outlets, thus can effectively prevent the generation of blood back phenomenon.
The minimum diameter of reducer 1 also can select to be set to 0.12cm or 0.13cm in the present embodiment.
On the basis of the foregoing description, described reducer 1 minimum diameter can be set to 0.01cm, 0.10cm, 0.06cm, 0.20cm etc., it is bigger that described reducer 1 both can be arranged to an end internal diameter, other end internal diameter small construction, also can be arranged in the minima requirement that internal diameter that reducer 1 has a place on axially at least satisfies above-mentioned internal diameter, above-mentioned structure all can realize purpose of the present invention.
The material of reducer 1 of the present invention can be chosen as commercially available arbitrary medical material, all can such as flexible plastic, rigid plastics, silica gel etc.
Automatic vent type transfusion set of the present invention, it can be provided with a plurality of reducers 1 described in the foregoing description at described dropping funnel 2 and described the connection between the tube for transfusion 5 down, thereby liquid can be realized the fragmentation of bubble is got rid of by a plurality of reducers 1 in the process that drips successively better like this.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (9)
1. automatic vent type transfusion set, comprise upper tubing (4), dropping funnel (2), following tube for transfusion (5), by-pass cock (7), the inlet of described dropping funnel (2) is communicated with described upper tubing (4) lower end and described tube for transfusion (5) down upper end respectively with liquid outlet, and described by-pass cock (7) is arranged on the described tube for transfusion (5) down; Also be connected with contact pin (6) in the upper end of described upper tubing (4), also be connected with transfusion needle (8) in the described lower end of tube for transfusion (5) down; It is characterized in that: described fluid and blood transfusion apparatus comprises that also at least one connection is arranged on described dropping funnel (2) and described reducer between the tube for transfusion (5) down, one end of described reducer internal diameter maximum is communicated with described dropping funnel liquid outlet, and the end that described reducer internal diameter is little is communicated with described tube for transfusion down; The minimum diameter of described reducer is 0.01cm～0.20cm.
2. automatic vent type transfusion set according to claim 1 is characterized in that: the minimum diameter of described reducer is 0.1cm～0.15cm.
3. according to the described automatic vent type transfusion set of claim 2, it is characterized in that: described reducer is conical reducer pipe.
4. automatic vent type transfusion set according to claim 1 and 2 is characterized in that: the other end relative with an end of described reducer internal diameter maximum is an end of internal diameter minimum.
5. according to claim 1 or 2 or 3 described automatic vent type transfusion sets, it is characterized in that: described dropping funnel is pegged graft by last dropping funnel (212) and following dropping funnel (213) and is formed.
6. automatic vent type transfusion set according to claim 5, it is characterized in that: described dropping funnel (213) down and the described splicing position of going up dropping funnel (212) are double-decker, form the scrobicular ring that matches and peg graft with described upward dropping funnel (212) between described double-deck internal layer and the skin.
7. automatic vent type transfusion set according to claim 5 is characterized in that: be provided with a relief valve (3) in the dropping funnel (213) under described.
8. automatic vent type transfusion set according to claim 7 is characterized in that: described relief valve (3) comprises ebonite accessory and flexible glue base (31);
Described ebonite accessory comprises floating cup (33) and the floating head (32) that is connected with described floating cup (33), described floating cup (33) forms opening floating cup cavity (34) up, described floating head (32) is arranged at the top of described opening, be provided with between described floating cup (33) and described floating head (32) and can make liquid enter clearance channel in the floating cup cavity, described floating head (32) size is more than or equal to described floating glass of cavity (34) tip size;
Described flexible glue base (31) is arranged at described floating cup (33) bottom;
Described floating cup (33) was realized with being connected by the fixed support (35) that is arranged between described floating cup cavity (34) inside and described floating head (32) bottom of described floating head (32);
Described fixed support (35) comprises that the center that is arranged on described floating cup cavity (34) inside is provided with the cylinder of through hole, and be arranged in the floating head projection (36) of described floating head (32) towards described floating cup (33) one sides, described floating head projection matches with described through hole and is connected;
Described cylinder runs through the bottom of described floating cup (33), is arranged at the described through hole at described cylinder center and matches with flexible glue base projection on being arranged at described flexible glue base (31) and be connected.
9. according to claim 1,2,3 or 8 described automatic vent type transfusion sets, it is characterized in that: described reducer is flexible plastic tube.
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| CN2010102260414A CN101879340B (en) | 2010-07-14 | 2010-07-14 | Automatic vent type transfusion set |
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| CN2010102260414A CN101879340B (en) | 2010-07-14 | 2010-07-14 | Automatic vent type transfusion set |
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| CN101879340B true CN101879340B (en) | 2011-12-07 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103143077A (en) * | 2013-03-28 | 2013-06-12 | 贾宇东 | Cavity structure enclosed by one bucket and two membranes |
| WO2015188576A1 (en) * | 2014-06-14 | 2015-12-17 | 山东新华安得医疗用品有限公司 | Self-venting, anti-bubble, automatic fluid checking, precision filtration, infusion apparatus |
| CN112727436A (en) * | 2019-10-28 | 2021-04-30 | 中国石油化工股份有限公司 | Testing device and method for simulating gas-liquid two-phase flow state to test corrosion rate of shaft |
| CN115068804A (en) * | 2022-01-25 | 2022-09-20 | 邢朝阳 | Bubble removal device for assisting ECMO conduit connection |
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| TW200633740A (en) * | 2005-03-16 | 2006-10-01 | Shian-Tzung Wang | Improved device for drop injector control |
| CN201061645Y (en) * | 2007-04-01 | 2008-05-21 | 莫仁高 | Disposable automatically damming transfusion utensil |
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| CN201744003U (en) * | 2010-07-14 | 2011-02-16 | 汪贤宗 | Transfusion device with function of automatic air discharge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040073192A1 (en) * | 2002-10-15 | 2004-04-15 | Flament-Garcia Mary Jane | Intravenous fluid delivery set |
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| TW200633740A (en) * | 2005-03-16 | 2006-10-01 | Shian-Tzung Wang | Improved device for drop injector control |
| CN201061645Y (en) * | 2007-04-01 | 2008-05-21 | 莫仁高 | Disposable automatically damming transfusion utensil |
| CN101543651A (en) * | 2008-10-07 | 2009-09-30 | 李林风 | Automatic exhaust safety transfusion device |
| CN101385884A (en) * | 2008-10-27 | 2009-03-18 | 杭州互邦医疗器械有限公司 | Automatic exhausting transfusion system |
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Owner name: SICHUAN PURUISI BIOTECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WANG XIANZONG Effective date: 20121212 |
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Effective date of registration: 20121212 Address after: 644104, Yibin, Sichuan province Luo long industrial concentration zone Patentee after: Sichuan Puruisi Biological Science & Technology Co., Ltd. Address before: 518104, No. 267-269, Wan An Road, Wan Feng Village, manholes Town, Guangdong, Shenzhen Patentee before: Wang Xianzong |